<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #d1{
            width: 200px;
            height: 100px;
            background-color: #62B5EC;
            position: absolute;
            z-index: 1;
        }
        #d2{
            width: 100px;
            height: 200px;
            background-color: bisque;
            position: relative;
            z-index: 2;
        }

    </style>
</head>
<body>
<div>
    <div id="d1"></div>
    <div id="d2"></div>

</div>
</body>
</html>